Package org.elasticsearch.common.logging

Outputs the Throwable portion of the LoggingEvent as a Json formatted field with array
"exception": [ "stacktrace", "lines", "as", "array", "elements" ]
Reusing @link org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverter which already converts a Throwable from
LoggingEvent into a multiline string